Backend Pro for codeigniter 2

[eluser]gihomn[/eluser]
hello, please forgive my poor english.

I tested it in my local server with CI 2.1.0, it works perfect.
and I got problem when I test it in my test server,
I can only put it in a subdomain, eg: sub1.domain.com/ci/

first of all, I upload a clean CI, it works fine, and I copy all files
to corresponding folder and install it, then I couldn't get the right
page as I saw in my local server, is there any specifics setting I should do?

I changed the base_url to

Code:

$config['base_url'] = "http://sub1.domain.com/ci/";

thanks!